Columnar joint

ABSTRACT

Development of a concrete-filled column by pumping concrete into interlocking tubular sections, particularly an interlocking joint which seals the concrete within the columns while aligning the sections with respect to each other and anchors the bottom telescoping section to its base within the ground.

United States Patent Archer et al.

[ 5] Mar.7,1972

[54] COLUMNAR JOINT [72] Inventors: Bill Archer, Meridian; John Low, III, Laurel, both of Miss.

[73] Assignee: Arlo, Inc., Laurel, Miss.

[22] Filed: May 15, 1970 [21] Appl. No.: 37,819 M H Related U.S. Application Data [63] Continuationin-part of Ser. No. 23,216, Mar. 27,

[52] US. Cl ..52/115,"52/297, 52/725 [51] Int. Cl ..E04h 12/34 [58] Field ofSearch ....52/1 15,632, 725,726, 297; 287/58 CT [56] References Cited UNITED STATES PATENTS 2,903,856 9/1959 En Dean ..52/115 2,685,353 8/1954 Caskie ..287/58 CT 2,800,737 7/1957 Crossan ..287/58 CT 3,495,370 2/1970 Habroetal. ..52/632 FOREIGN PATENTS OR APPLICATIONS 279,691 1 l/ 1927 Great Britain ..52/726 251,994 9/ 1948 Switzerland ...52/725 1962 Netherlands ..52/ 169 Primary Examiner-Frank L. Abbott Assistant Examiner-H. E. Raduazo Attorney-David H. Semmes [57] ABSTRACT 2 Claims, 5 Drawing Figures IN VENTOR ATTORNEY PATENTEDMAR 7 I972 a .m I. I ..p..,

COLUMNAR JOINT CROSS-REFERENCES TO RELATED APPLICATIONS This application is a continuation-in-part of applicants IN- TERLOCKING JOINT FOR TELESCOPING TUBES (Ser. No. 23,216, filed, Mar. 27, 1970). In the parent application provision was made for inclining the abutting surfaces of the locking band and stop ring attached to interlocking outer and inner telescoping sections.

The present application is directed'to improvements upon this inclining feature, as well as for provision of interlocking features between the base or ground section and the adjacent telescoping section.

BACKGROUND OF THE INVENTION 1. Field of the Invention Applicants were joint inventors in the earlier issued US. Pat. Nos. 3,469,358 and 3,471,980 wherein a column is developed by pumping pressurized concrete into a plurality of 20 SUMMARY OF THE INVENTION According to the present invention, the outer tubular section is provided at its top with a radially inwardly extending stop ring. The inner tubular section is provided at its bottom with a peripheral locking band, engaging and interlocking with the stop ring. The inner section is also provided with a plurality of splines extending longitudinally beneath the locking band. The stop ring and locking band are complementally inclined to engage each other in a press-fitting moistureproof seal, as the sections are longitudinally extended. The splines engage the interior wall of the outer section and thus align the inner section with the outer section. An air escape passage is provided intermediate the locking band and the inner wall of the outer section.

Additionally, a stop ring is provided for positively locking the base with respect to its adjacent telescoping section, and a seal is formed by pouring of plastic into place before extending the sections by pumping of concrete.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a fragmentary perspective view, partially in section, showing the longitudinally extended sections provided with interlocking joints, according to the present invention;

FIG. 2 is a fragmentary vertical section of one of the joints;

FIG. 3 is a fragmentary vertical section of the interlocking base section with its adjacent telescoping section;

FIG. 4 is a fragmentary transverse section, taken on section line 44 of FIG. 2; and

FIG. 5 is a fragmentary transverse section, taken along section line 55 of FIG. 3.

DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. I the column is illustrated as comprised of base section interlocking with tubular sections l2, l4 and 16. Top section 16 has a relatively flat closed top 20 with one or more venting apertures 22, 24 which permit venting, while maintaining the pressurized concrete therein.

In FIG. 2 the interlocking joint of sections 14 and 16 is illustrated. Outer section 14 has a top inwardly extending stop ring 26, formed from -plus-or-minus Durometer plastic which may be bonded to the tube before assembly. Ring 26 has an outwardl diverging downwardly inclined shoulder 30. Inner section 6 has an outwardly extending peripheral locking band 28, having an upwardly inwardly converging inclined shoulder 32, which abuts inclined shoulder 30 to provide a positive sealed lock of the sections with respect to each other. Locking band 28 diameter is less than the diameter of tube 16, as the sections are extended. Locking band 28 may be constructed of 80-plus-or-minus Durometer plastic, bonded to the inner section before assembly.

At least three longitudinally extending splines 36, having an upper inclined shoulder 38 are positioned on the bottom 42 of the inner section 16 at l20increments, so as to align the sections with respect to each other. The bottom of splines 36 may be coextensive with the bottom 42 of inner section 16.

In FIGS. 3 and 5 the engagement of base section 10 with inner section 12 is illustrated. Section 12 shall have an outwardly extending band 46 formed from SO-pIus-or-minus Durometer plastic and bonded at its outer periphery. Top sealing ring 44 shall be formed from liquid quick-setting plastic poured into place and allowed to set or cure prior to pumping of concrete. At least three or more splines 49 are secured to the adjacent section 12 below ring 46. The bottom 52 of the inner section 12 and the individual splines 49 rest upon the lugs 50 which are secured to the interior wall of base section 10.

As base section 10 is positioned in compacted earth or concrete and the section 12 is aligned therewith, liquid plastic 44 shall be poured in place. As liquid concrete is introduced via gate 52, the sections 14 and 16 are extended with respect to section 10 and 12. A plurality of air relief tubes 54 may be positioned intermediate splines 49.

We claim:

1. A column of the type formed from a plurality of concretefilled interlocking sections, a joint comprising:

A. an outer telescoping section having:

i. an inwardly extending stop ring secured to its top, said ring having an outwardly diverging, downwardly inclined shoulder;

B. an inner telescoping section having:

i. an outwardly extending peripheral locking band secured to its bottom, said locking band having an inwardly upwardly converging inclined shoulder, such that said stop band and said stop ring abut each other upon an incline, as said sections are extended with respect to each other; and

ii. at least three longitudinally extending splines positioned upon the exterior of said inner section beneath said band, so as to align said inner section with respect to said outer section; and

C. a base section, including:

i. a plastic and inwardly extending stop ring secured to said base top and the bottom of the adjacent telescoping section; and

ii. a plurality of inwardly extending, horizontal lugs secured to the inner surface of said tube, as a support for the adjacent telescoping section.

2. A column of the type formed from a plurality of concretefilled interlocking sections as in claim 1, the telescoping section adjacent said base having a port for the introduction of fluid concrete therein. 

1. A column of the type formed from a plurality of concretefilled interlocking sections, a joint comprising: A. an outer telescoping section having: i. an inwardly extending stop ring secured to its top, said ring having an outwardly diverging, downwardly inclined shoulder; B. an inner telescoping section having: i. an outwardly extending peripheral locking band secured to its bottom, said locking band having an inwardly upwardly converging inclined shoulder, such that said stop band and said stop ring abut each other upon an incline, as said sections are extended with respect to each other; and ii. at least three longitudinally extending splines positioned upon the exterior of said inner section beneath said band, so as to align said inner section with respect to said outer section; and C. a base section, including: i. a plastic and inwardly extending stop ring secured to said base top and the bottom of the adjacent telescoping section; and ii. a plurality of inwardly extending, horizontal lugs secured to the inner surface of said tube, as a support for the adjacent telescoping section.
 2. A column of the type formed from a plurality of concrete-filled interlocking sections as in claim 1, the telescoping section adjacent said base having a port for the introduction of fluid concrete therein. 